Left untreated and exposed to the elements, natural teak will mellow to a warm silvery gray or even dark gray over time. Our water-based Teak Protector maintains your wood’s original honey brown color up to four times longer than teak oil and up to twice as long as teak sealers. The eco-safe formula uses nanotechnology to penetrate deeply into the wood, protecting it from moisture and harmful UV rays, while allowing the teak to breathe for long-lasting results.